How much is a PSA 10 Mewtwo 10/102 (Base Set) worth?

A PSA 10 Mewtwo 10/102 from Base Set is currently worth about $4,510, based on recent eBay sold comps via PokeTrace.

How much is a PSA 9 Mewtwo 10/102 (Base Set) worth?

A PSA 9 Mewtwo 10/102 from Base Set is currently worth about $399, based on recent eBay sold comps via PokeTrace.

What is the PSA 10 vs PSA 9 price gap on Mewtwo 10/102 (Base Set)?

PSA 10 ($4,510) trades at roughly a $4,111 premium over PSA 9 ($399), about 11.3x.

Base Set Mewtwo 10/102: PSA 9 vs PSA 10

Base Set Mewtwo 10/102 shows an unusually wide gem-mint premium between PSA 9 and PSA 10: a $4,111 dollar gap, with the gem mint multiplier at 11.3x. The crack-and-resub math favors the resub: expected value is positive even at a conservative 15% upgrade probability.

PSA 10

$4,510.04

PSA 9

$398.58

PSA 8

—

Limited recent sales tracked. Pull eBay sold comps before acting.

The Spread

The PSA 9 to PSA 10 spread on Mewtwo 10/102 (Base Set).

$4,111

Dollar gap, PSA 9 to PSA 10

11.3x

PSA 10 sells for 11.3x a PSA 9

The Cross-Grade Read

Where this card sits across grade tiers, and against its own set.

Grade-Tier Spread

Raw to PSA 9 $365 (1,075%)

PSA 9 to PSA 10 $4,111 (1,032%)

Raw to PSA 10 $4,476 (13,196%)

Set-Wide Cross-Grade Spread

11.3x

This card, PSA 10 to PSA 9

#4 of 94

Approx. widest-gap rank in Base Set

3.6x

Base Set median gap

At 11.3x, the gem-mint premium on this card is an unusually wide gap versus the Base Set median of 3.6x, approximately the 4th-widest gem-mint gap of 94 priced Base Set cards.

Dealer Read

The grade is doing the heavy lifting on price here: a PSA 10 trades at 11.3x a PSA 9. It ranks approximately 4th of 94 in the set for gem-mint spread, an unusually wide gap against the 3.6x median.

Three-Outcome EV Calculator

PSA 9 acquisition cost ($)

PSA resub cost ($)

Probability of each outcome (must total 100%)

PSA 10 (upgrade) 15%

PSA 9 (regrade) 70%

PSA 8 (downgrade) 15%

Defaults are conservative starting points. Adjust based on the specific slab. A borderline 9 with strong centering plays differently than a 9 with edge wear.

PSA 10 outcome (sale price minus resub minus acquisition) $0

PSA 9 outcome (regrade, no upgrade) $0

PSA 8 outcome (downgrade, slower sell, tied capital) $0

Expected Value

Math favors holding the 9

Base Set 10/102 Mewtwo Holo is a WOTC-era release from 1999. The gap between its PSA 9 and PSA 10 prices is $4,111.

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